If an operator needs to do zero tolerance grinding close to a wall, it is recommended that he dedicates one Dust Muzzle and grinder setup for that specific type of work. Typically, he would use a 7” grinder for work in the field and a 10-11Amp, 4 ½” grinder for work around the edges and close to the walls.
In normal temperatures, the Dust Muzzle has enough flexibility to allow the operator to push the Dust Muzzle up against the wall so that only the .060” wall of the Dust Muzzle keeps him from going to zero tolerance.
If a true zero tolerance is needed, the Dust Muzzle can be easily modified so the operator can grind right up next to the wall.
Place a mark on the Dust Muzzle showing how much of the skirt of the Dust Muzzle needs to be removed so the wheel can touch the wall without having any of the Dust Muzzle interfering.
Remove the Dust Muzzle from the Grinder and remove the unnecessary part of the Dust Muzzle skirt with a stationary grinder or belt sander using 60 grit paper.
Re-install the Dust Muzzle. You are now ready to grind with zero tolerance.
If dust is escaping from the cut off area of the Dust Muzzle skirt, it is possible that the vacuum has a dirty filter or does not have enough power. If this is the case, the efficiency of the Dust Muzzle can be increased by covering some or all of the vacuum relief holes on the top of the Dust Muzzle. This will cause more airflow to come through the opening in the skirt.
All Dust Collection Products dust collectors will work efficiently with an industrial vacuum that has at least 90” of static lift, 100 CFM of airflow and replaceable filter bags.